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third_party/simplejson/simplejson/tests/test_check_circular.py

Index: third_party/simplejson/simplejson/tests/test_check_circular.py
diff --git a/third_party/simplejson/simplejson/tests/test_check_circular.py b/third_party/simplejson/simplejson/tests/test_check_circular.py
new file mode 100755
index 0000000000000000000000000000000000000000..af6463d6d88f8178ac0a6e07662650c9a623bc48
--- /dev/null
+++ b/third_party/simplejson/simplejson/tests/test_check_circular.py
@@ -0,0 +1,30 @@
+from unittest import TestCase
+import simplejson as json
+
+def default_iterable(obj):
+    return list(obj)
+
+class TestCheckCircular(TestCase):
+    def test_circular_dict(self):
+        dct = {}
+        dct['a'] = dct
+        self.assertRaises(ValueError, json.dumps, dct)
+
+    def test_circular_list(self):
+        lst = []
+        lst.append(lst)
+        self.assertRaises(ValueError, json.dumps, lst)
+
+    def test_circular_composite(self):
+        dct2 = {}
+        dct2['a'] = []
+        dct2['a'].append(dct2)
+        self.assertRaises(ValueError, json.dumps, dct2)
+
+    def test_circular_default(self):
+        json.dumps([set()], default=default_iterable)
+        self.assertRaises(TypeError, json.dumps, [set()])
+
+    def test_circular_off_default(self):
+        json.dumps([set()], default=default_iterable, check_circular=False)
+        self.assertRaises(TypeError, json.dumps, [set()], check_circular=False)